Well, unfortunately I haven't started brewing AG yet, I'm still doing extract. I will try some of your ideas though.

I have one question, how long should they be refrigerated before opening. Currently, I have all my bottles in a closet conditioning at a nice 70-72*. I only put a couple in the fridge at a time to keep me from drinking them all in one setting, lol.

I've noticed in a couple of different threads where people are talking about putting the beer in the fridge for a couple of weeks, does that do anything for head retention or is that just for cold crashing/conditioning purposes. Mostly my beer is only in the fridge overnight and I drink it the next day, 2-3 at a time.

I have one question, how long should they be refrigerated before opening.

At least a couple of days, I'd say a week or more would be ideal. It doesn't do anything for head retention, it simply allows for the CO2 in the headspace of the bottle to dissolve back into the beer as it chills.

CO2 is more soluble the colder the beer. So at room temperature, it's not as soluble as when the beer is at fridge temperatures. Consequently, the pressure in the neck of the bottle is higher, and there is less CO2 dissolved in the beer. As the beer cools, it becomes better able to dissolve the CO2, and the pressure in the headspace of the bottle drops as CO2 goes into solution. The result is better carbonation.